Next month, Nexxus will roll out two new hair care lines that promise to improve the look of aging and damaged hair. Youth Renewal and Hydra-Light will be distributed at 25,0000 mass retailers, select drugstores and supermarkets nationwide. The five-item Youth Renewal line is said to address the eight visible signs of hair aging: volume loss, breakage, dullness, roughness, dryness, brittleness, unruliness and loss of color vibrancy, all without silicones. Thinning hair is treated with a...